Great game! I have the same questions as BDK. Also, please consider answering them in a tutorial. Nonengineers will enjoy this game more if they have a basic idea what features determine the best bridges. For ex., what are the consequences of using beams of different lengths or angles? What do the notations on the layouts mean? Should we be considering the weight of the truck or train? Thanks.

@BDK-Actually no :(, though we are writing a building guide before the next release.-A strategy could be to build a solid lightweight bridge which implies low elements count, low load and no part breakages.-Yes, in order to build a stable bridge capacity is more important, however low elements count can potentially yield higher score than low load.

@Las veganThanks.-Short beams structures are less stable than medium or long beams structures.Usually angles starting from 30 degrees to 60 are better to distribute load than sharp angles.

-If I understood well your question, the number shown by enabling the drawing info option is the lenght of the elements in grid units. -Yes you should consider the weight of trailers and that the trains are heavier than the truck.